package com.benz.order.util.computer;

import java.util.Arrays;

public class Computer {
    private USB[] usbArr = new USB[4];
    public void add(USB usb){
        for(int i=0;i< usbArr.length;i++){
            if(usbArr[i]==null){
                usbArr[i]=usb;
                break;
            }

        }
    }
    public void powerOn(){
        for (int i = 0; i < usbArr.length; i++) {
            if(usbArr[i]!=null){
                usbArr[i].turnOn();
            }
        }
        System.out.println("计算机开机成功。");
    }
    public void powerOff(){
        for (int i = 0; i < usbArr.length; i++) {
            if(usbArr[i]!=null){
                usbArr[i].turnOff();
            }
        }
        System.out.println("计算机关机成功。");
    }

}
